The word "unlaxing" refers to the act of becoming less relaxed or tense. Antonyms for this word include "relaxing", "soothing", "calming", "pacifying", "easing", "releasing", "loosening", "melting", "unwinding", and "letting go". These words signify a state of relaxation or calmness, which is opposite to the original meaning of "unlaxing". By using antonyms, we can convey the opposite tone and mood in our communication, whether it's in writing or speech. For instance, instead of saying "I feel unlaxing after the meeting," we can say "I feel relaxed and calm after the meeting.